Hot-water boiler



(No Model.) 2 Sheets- Sheet 2. B. ETIENNE. HOT WATER BOILER.

Patented Apr. 24, 1894.

/NVENTOH BRuNEAu ETIENNE W/TNESSES:

ATTORNEY.

'me NA'TIQNAL LIMOQRAPNINB co'MPAnr.

wAsnmavon. o. c.

i UNrTnn STATES PATENT OFFICE.

BRUN EAU ETIENNE, `OF WATERBURY, CONNECTICUT. i

HOT-WATER BOILER.

SPECIFICATION forming part of Letters Patent No. `518,592, dated April24, 1894.

Application filed July 19, 1893.

To all whom it may concern:

Be it known that I, BRUNEAU ETIENNE, a subject of the Queen of GreatBritain, and a resldent of Waterbury, in the county of New Haven andState of Connecticut, have invented certain new and useful Improvements1n Hot-Water Boilers, of which the following is a specification.

The object of this invention is to produce a hot water furnace whichshall be simple, durable and inexpensive, also one in which a greatamount of heating surface is secured, and one in which a perfectcirculation of water may be relied upon.

This furnace is designed particularly for dwelling purposes, and wouldbe connected with the various rooms in a dwelling by pipes,

to any well known hot water radiator. Any desired number of radiatorsmay be connected and supplied with hot water.

In the accompanying drawings forming part of this specification-Figure lis a central vertical section of my furnace. Fig. 2 is a top plan view,the pipes being omitted. Fig. 3 is a cross section on the line a.' :vofFig. l looking in the direction of the arrows, and Fig. 4 is a sideelevation of one set of the heating tubes detached.

I preferably construct this furnace square as shown, as I find inpractice that it enables me to secure better results, both inconstruction and as a heat producer.

l is a base and ash pan receptacle, and also serves to support thefurnace proper.

2 is an ash pan within the receptacle and may be removed by means of adoor 3.

4 is the re chamber and may be provided with a lining of fire brick (notshown) if desired. The heater proper consists of an inner and outercasing 5 and 6, said inner casing 5 surrounding the iire and forming thefire chamber. Between the inner and outer casing is formed the waterreservoir 7 in which the water is heated together with several series oftubes through which the water passes. These tubes are directly exposedto the fire, and are arranged to have the flames pass between them. Uponthe inner casing and across the rear thereof I form an inwardlyextending angular enlargement 8 having a Serial No. 480,964. (No model.)

horizontal portion acrossits breadth which I provide with holes for thepurpose of eonnecting vertical pipes 9 which in turn are connected withthe opposite side of the reservoir 7 through a series of horizontalcross pipes 10. In the drawingsI have shown four vertical pipes 9 eachhaving a series of three of the cross pipes. Of course the exact numberis immaterial since any number can be used as well. In the front of thefurnace and Ydirectly in the path of the cross pipes lO I form anenlargement in the reservoir as at 1l by extending the outer casing. Thepurpose of this is to admit of a free circulation of water through thecross pipes and into the water reservoir when it would be again heatedand pass upward.

l2 indicates a cold water supply pipe which I introduce into the boilerthrough one of the return pipes 13, from the radiators. It will be seenthat both the cold water supply and the return water from the radiatorsare introduced into the boiler at practically the same places. From herethe water is free to circulate around the boiler as well as in avertical direction. In the latter event it would rise in a direct linewith the vertical tubes 9 and would mostly pass through them and becomeheated and travel to the top of the boiler,and off again to the severalradiators through the pipes 14. Any number of these pipes can beconnected as will be seen, as well as an equal number of return pipes.

15 denotes the smoke pipe. construction.

16 is the door through which the fuel is supplied to the furnace.

It will be seen that this furnace is constructed principally in threesections, the base forming one section, the central portion and top theother twosections. Being constructed in this manner it is easily set up.

Having thus described my invention, I claim l. In a furnace, thecombination with a fire chamber, of a heating reservoir surrounding thelatter, consisting of an inner and outer lining, the former providedwith an inwardly extending angular enlargement, and the latter drawn into conform with said enlarge- This is of usual ICO y `Water thereinscribed.

ment a series of vertical tubings andhorizony tal cross pipes extendingaei'ss the fire ehamf fiber and coun'ectingwith ropposite sidesot' theheater reservoir for/the prpose'of @Qnveying i f 'substantially asshownand der s 2. The combination, ina `fur,Iiku'zcoi einnuten` yand innercasingas fire chamber Withiiiisaid casing, a Water` reservoirsurrounding theufire K chamber, an enlargement at the reazand bottom ofsaid reservoir, inwhich thesupply is received, a. narrow passage abovesaid enlarge-V, ment to insure the passage" of the water Witnesses:

